Road Stream Crossing Site AUS_PR100
Au Sable River Watershed, Grey Creek
Alvin Rd
Mikado Twp,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.54631
, -83.44225
T25N
R08E
Sec 22,23
Owned by Private
Fish Passability 0
Perch Height: 0.1 ft.
Total Erosion: 3.6973 tons/year
Severity: Severe
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 2
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Poor
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 40 ft.
, Width 5.5 ft.
, Height 5.5 ft.
Perch Height: 0.1 ft.
Structure Inlet
Water Depth: 1.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Additional Comments
Lots of algae in water below outlet, water cloudy on both sides. Culver # 2 is dry on the outlet side. Water not moving much, seems low, hard to tell inlet and outlet. Lots of crayfish in water.
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 10 ft.
, Width 11.5 ft.
, Depth 1.5 ft.
Riffle Information
Water Depth: 0.2 ft.
Bankfull Width: 10.5 ft.
Wetted Width: 4.8 ft.
Water Velocity: 0 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Fair
Road Width at Culvert: 19 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 2.8 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2.3 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 256 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.442
Erosion: 0.5928 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 2.9835 tons/year
Erosion Information
Total Erosion at Crossing: 3.6973 tons/year
Extent of Erosion: Severe
Erosion is occurring and corrective actions can be installed to address the problem.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Upstream Embankment |
3 ft. |
2.2 ft. |
0.6 ft. |
no |
Gravel |
0.036 |
Left Upstream Embankment |
2.1 ft. |
1.7 ft. |
0.6 ft. |
no |
Gravel |
0.0252 |
Left Downstream Embankment |
1.7 ft. |
2.9 ft. |
1.6 ft. |
no |
Sand |
0.0598 |
Summary Information
Fish Passability 0
Erosion is an area of concern for this site.
Yes, because there is an upstream pond, the culverts are in poor shape, and there is some erosion on the banks.
A future visit to this site is recommended. Because of the problems listed above and the poor water quality.
These non-native species were observerd at this site: Japanese knotweed